The Dee Dees are Harley and Ivy's granddaughtersHarley and Ivy somehow made babies together using science. They do have red hair like Ivy.
- Jossed: Those are WIGS to make them look like dolls, not actual hair.
Alternatively, the Dee Dees are Harley and Jack "The Creeper" Ryder's granddaughtersCreeper was a Stalker with a Crush towards Harley, and his personality while not under the patch is similar enough to the late Mr. J's without the psychopathic tendencies for Harley to give the guy a chance.
Jordan Pryce became Paxton Powers' cellmateIt seems more than coincidental that Bruce Wayne had not just one but two sleazy, sociopathic, backstabbing business partners who had both secretly planned to kill Bruce.
Joker's plot to kidnap and brainwash Tim was a result of the events of "Wild Cards"Joker's defeat at the climax of that episode, in addition to being his final chronological DCAU appearance before the flashback here, was a particularly humiliating one: Having Batman turn his pet Mind Rapist against him, shooting to spit his so-called Insanity Immunity and leaving him even more off the deep end than usual, and all on live TV to boot, thanks to him buying the airways so that Ace could use her powers on the entire country. Unfortunately, Ace's assault on Joker's mind only left him even more crazier than usual, and blaming Batman for Ace turning against him (he was the one who revealed that Joker still had the immunity headband to her) and still having the other Cadmus tech he liberated when breaking out Ace and the rest of the Royal Flush Gang, decided to do to Robin a physical version of what Batman had Ace do to him as payback.